@RadghKris said in NEED HELP: No screen, PaperS3 beeps and returns Serial monitor communication....: flags I went and deleted this argument/variable from the library. May not have been the best thing to do, but it worked! I got the bar graph to work!! So, I have one program that will display the screen, and one program that will beep the buzzer and communicate with the serial monitor. Progress. Still not perfect, but progress.